hg: openjfx/8u-dev/rt: 8189689: JavaFX build fails with gcc 6

[murali.billa at oracle.com]

Changeset: 7cc2e627cf41
Author:    pbansal
Date:      2018-10-12 12:49 +0530
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/7cc2e627cf41

8189689: JavaFX build fails with gcc 6
Reviewed-by: kcr, mbilla

! modules/fxpackager/src/main/native/library/common/PosixPlatform.cpp